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trunk: Updating svn:ignore properties. These are now extracted from t…
…he .gitignore file using the script misc/maintenance/svnignore.sh.
Adding 'unlink' commands to various tests that write to files (this process is not complete).
Some changes to the online-decoding setup as it relates to pitch (this work is not yet finished, but checking it in with other changes,
as it shouldn't break anything that currently runs.)
git-svn-id: https://svn.code.sf.net/p/kaldi/code/trunk@4365 5e6a8d80-dfce-4ca6-a32a-6e07a63d50c8- Loading branch information
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| ## This config is given by conf/make_pitch_online.sh to the program compute-and-process-kaldi-pitch-feats, | ||
| ## and is copied by steps/online/nnet2/prepare_online_decoding.sh and similar scripts, to be given | ||
| ## to programs like online2-wav-nnet2-latgen-faster. | ||
| ## The program compute-and-process-kaldi-pitch-feats will use it to compute pitch features that | ||
| ## are the same as that those which will generated in online decoding; this enables us to train | ||
| ## in a way that's compatible with online decoding. | ||
| ## | ||
|
|
||
| ## most of these options relate to the post-processing rather than the pitch | ||
| ## extraction itself. | ||
| --add-raw-log-pitch=true ## this is intended for input to neural nets, so our | ||
| ## approach is "throw everything in and see what | ||
| ## sticks". | ||
| --normalization-left-context=100 | ||
| --normalization-right-context=10 # We're removing amost all the right-context | ||
| # for the normalization. The reason why we | ||
| # include a small nonzero right-context (of | ||
| # just 0.1 second) is that by adding a little | ||
| # latency to the computation, it enables us to | ||
| # get a more accurate estimate of the pitch on | ||
| # the frame we're currently computing the | ||
| # normalized pitch of. We know for the current | ||
| # frame that we will have at least 10 frames to | ||
| # the right, and those extra 10 frames will | ||
| # increase the quality of the Viterbi | ||
| # backtrace. | ||
| # | ||
| # Note: our changes to the (left,right) context | ||
| # from the defaults of (75,75) to (100,10) will | ||
| # almost certainly worsen results, but will | ||
| # reduce latency. | ||
| --frames-per-chunk=10 ## relates to offline simulation of online decoding; 1 | ||
| ## would be equivalent to getting in samples one by | ||
| ## one. | ||
| --simulate-first-pass-online=true ## this make the online-pitch-extraction code | ||
| ## output the 'first-pass' features, which | ||
| ## are less accurate than the final ones, and | ||
| ## which are the only features the neural-net | ||
| ## decoding would ever see (since we can't | ||
| ## afford to do lattice rescoring in the | ||
| ## neural-net code | ||
| --delay=5 ## We delay all the pitch information by 5 frames. This is almost | ||
| ## certainly not helpful, but it helps to reduce the overall latency | ||
| ## added by the pitch computation, from 10 (given by | ||
| ## --normalization-right-context) to 10 - 5 = 5. |
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